Prusa MK4S Filament Guide - Bowden version

I created a filament guide extension for the current filament guide. This allows for printing directly from a dryer box.
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updated January 17, 2025

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Hello,

I have created a Filament Guide that fits perfectly into the original filament holder from the MK4S. To ensure smooth movement, I used a bowden setup. This addon is particularly useful when printing from a drybox.

To assemble it, you will need:

  • 1x M3 x 8 or 10 hex screw – for fastening the two parts together
  • 2x M3 x 10 or 12 hex screws – for attaching the assembly to the original filament guide
  • 1x PTFE tube of the desired length
  • 1x pneumatic fitting – I used the SMC R, Rc 1/8 PR6, model: KQ2H06-01A Link: SMC Product

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The author marked this model as their own original creation.

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